Finally. Finally the leader of a major distribution who has the guts to stand up and say what a lot of people have known for a long time, but didn't dare to say because it usually leads to a storm of criticism. Mark Shuttleworth has announced that Ubuntu will be moving away from X.org, opting to go with Wayland instead.

Well, it is probably good for 95% of users, but I loved to be able to open a remote window from a server using ssh without any additional apps or protocols. X have great features, but yea, when the client and server are the same computer, it is a bit overkill and the protocol is not like any other modern display backend, probably because it is not modern at all.

As long as they ship Qt/GTK with X support, everything will probably keep working.

* Even with NX there is no way to shadow a local session. For that you have to use x11vnc.

I haven't personally used it, but there's mention of a "shadow" desktop profile in the NX docs, and if you go into the Advanced Configuration, you can select "Shadow". Not sure what it does, but it's there.